supply of design, manufacturing and supply of high base stool with height adjustment and revolving facility as per specifications as below: 1)top round seat base of total dia 410mm of 3/4 , design, manufacturing and supply of high base stool with height adjustment and revolving fa cility as per specifications as below: 1)top round seat base of total dia 410mm of 3/4 dia ms pipe circumfe rence and perforated crc steel sheet of thick 1 mm with suitable base support for perforated sheet. 2)cent re support ms pipe of 2 inch dia with bush arrangement for height adjustment sliding rod. 3)5 nos of equal spaced fabricated base lugs of 1.5mm thick ms sheet with bush at bottom of each lug.the overall circumfer ence dia of base to be 550mm. 4) free height of stool minimum 610mm and maximum 760mm. height adj ustment range 150mm with knob arrangement. 5)final finished product to be painted with a coat of metalli c primer and then 2 coat of spray paint with black enamel of satin finish [ warranty period: 30 months aft er the date of delivery ] ]